Animals at work: identity, politics, and culture in work with animals. Hrsg. v. Lindsay Hamilton/ Nik Taylor. Boston 2013. Internet: https://books.google.de/books?id=YIWljwKYbBEC&printsec=frontcover&dq=Animals+at+Work.+Identity,+Politics+and+Culture+in+Work+with+Animals&hl=en&sa=X&ved=0ahUKEwjQ5M_onuDRAhVCWhoKHTQLBTsQ6AEIHDAA#v=onepage&q=Animals%20at%20Work.%20Identity%2C%20Politics%20and%20Culture%20in%20Work%20with%20Animals&f=false.